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Redescription of the cranial morphology of Mariliasuchus amarali, and its phylogenetic affinities (Crocodyliformes, Notosuchia)

by: Zaher, Hussam.

Publication date: 2006
Usage: Attribution-NonCommercial-ShareAlike 4.0 International
Topics: Mariliasuchus amarali, Skull, Anatomy, Crocodilians, Fossil, Reptiles, Fossil, Crocodilians, Phylogeny, Paleontology, Skull -- Anatomy, Crocodilians, Fossil -- Brazil -- São Paulo (State), Reptiles, Fossil -- Brazil -- São Paulo (State), Crocodilians -- Phylogeny, Paleontology -- Cretaceous -- Brazil -- São Paulo (State), Paleontology -- Brazil -- São Paulo (State)
Publisher: New York, NY : American Museum of Natural History
Collection: americanmuseumnaturalhistory; biodiversity
Contributor: American Museum of Natural History Library
Language: English
Rights: http://biodiversitylibrary.org/permissions
Rights-holder: American Museum of Natural History Library
Volume: no. 3512
Item Size: 34.1M

40 p. : 26 cm

"The cranial morphology of Mariliasuchus amarali, a poorly known notosuchian from the late Cretaceous of southeastern Brazil, is redescribed based on new material. Its phylogenetic affinities within Crocodylomorpha are evaluated through a parsimony analysis involving 46 taxa and 198 characters. Mariliasuchus is nested well inside the clade Notosuchia, as the sister group of Comahuesuchus, a derived notosuchian from the late Cretaceous of Argentina. Both taxa share the following unambiguous synapomorphies: ventral half of the lacrimal tapering posteroventrally, not contacting or only slightly contacting the jugal; presence of a large foramen on the lateral surface of the anterior part of the jugal; presence of procumbent premaxillary and anterior dentary alveoli; and ectopterygoids that do not participate of the palatine bar. The presence of procumbent premaxillary teeth, specialized tooth crown morphology, and fore-aft jaw movements suggests that this group presented complex jaw movements related to specialized feeding habits"--P. [1]

Title from caption

"May 17, 2006."

Includes bibliographical references (p. 26-28)

Abstract: 'The cranial morphology of Mariliasuchus amarali, a poorly known notosuchian from the late Cretaceous of southeastern Brazil, is redescribed based on new material. Its phylogenetic affinities within Crocodylomorpha are evaluated through a parsimony analysis involving 46 taxa and 198 characters. Mariliasuchus is nested well inside the clade Notosuchia, as the sister group of Comahuesuchus, a derived notosuchian from the late Cretaceous of Argentina. Both taxa share the following unambiguous synapomorphies: ventral half of the lacrimal tapering posteroventrally, not contacting or only slightly contacting the jugal; presence of a large foramen on the lateral surface of the anterior part of the jugal; presence of procumbent premaxillary and anterior dentary alveoli; and ectopterygoids that do not participate of the palatine bar. The presence of procumbent premaxillary teeth, specialized tooth crown morphology, and fore-aft jaw movements suggests that this group presented complex jaw movements related to specialized feeding habits'--P. [1].
Addeddate: 2020-04-24 04:06:07
Associated-names: Zaher, Hussam; Pol, Diego
Call number: amnhnovitates3512
Call-number: amnhnovitates3512
External-identifier: urn:doi:10.1206/3512.1
Foldoutcount: 0
Genre: bibliography
Identifier: redescriptioncr00zahe
Identifier-ark: ark:/13960/t3716s492
Identifier-bib: amnhnovitates3512
Ocr: ABBYY FineReader 11.0 (Extended OCR)
Page_number_confidence: 100.00
Pages: 40
Possible copyright status: In copyright. Digitized with the permission of the rights holder.
Ppi: 437
Year: 2006